package com.lijj.eduService.controller;


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.lijj.commonutils.R;
import com.lijj.eduService.entity.EduTeacher;
import com.lijj.eduService.entity.vo.TeacherQuery;
import com.lijj.eduService.service.EduTeacherService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@Api(description="讲师管理")
@RestController
@RequestMapping("/eduService/teacher")
//@CrossOrigin
public class EduTeacherController {

    // 把service注入
    @Autowired
    private EduTeacherService eduTeacherService;

    // 访问地址： http://localhost:8001/eduservice/teacher/findAll

    // 1 查询讲师所有数据
    @ApiOperation(value = "所有讲师列表")
    @GetMapping("findAll")
    public R findAllTeacher() {
        // 调用service的方法实现查询所有的操作
       List<EduTeacher> list = eduTeacherService.list(null);
        return R.ok().data("items",list);
    }

    // 2 逻辑删除讲师的方法
    @ApiOperation(value = "根据ID删除讲师")
    @DeleteMapping("delete/{id}")
    public R removeTeacher(
            @ApiParam(name = "id", value = "讲师ID", required = true)
            @PathVariable String id) {
        boolean flag = eduTeacherService.removeById(id);
        if(flag) {
            return R.ok();
        } else {
            return R.error();
        }
    }

    // 3 分页查询讲师的方法
    // current 当前页
    // limit 每页记录数
    // 3 分页查询讲师的方法
    // current 当前页
    // limit 每页记录数
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageListTeacher(@PathVariable long current,
                             @PathVariable long limit) {

        //创建Page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
//
//        try {
//            int i = 10/0;
//        } catch (Exception e) {
//            throw  new JunjieException(200001,"执行了自定义异常处理");
//        };

        // 调用方法实现分页
        // 调用方法时候，底层封装，把分页所有数据封装到pageTeacher对象里面
        eduTeacherService.page(pageTeacher,null);

        long total = pageTeacher.getTotal(); //总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合

        // 第一种写法
//        HashMap map = new HashMap();
//        map.put("total",total);
//        map.put("rows",records);
//        return R.ok().data(map);
        // 第二种写法
        return R.ok().data("total",total).data("rows",records);
    }

    //4 条件查询分页带方法
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable long current,
                                  @PathVariable long limit,
                                  //参数值可以为空
                                  @RequestBody(required = false) TeacherQuery teacherQuery) {
        // 创建Page
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
        // 构件条件
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        //多条件查询
        //mybatis学过的动态sql
        //判断条件之是否为空，如果不为空拼接条件
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        // 判断条件值是否为空，如果不为空拼接条件
        if(!StringUtils.isEmpty(name)) {
            //构建条件
            wrapper.like("name",name);
        }
        if(!StringUtils.isEmpty(level)) {
            wrapper.eq("level",level);
        }
        if(!StringUtils.isEmpty(begin)) {
            wrapper.ge("gmt_create",begin);
        }
        if(!StringUtils.isEmpty(end)) {
            wrapper.le("gmt_modified",end);
        }

        //排序
        wrapper.orderByDesc("gmt_create");

        // 调用方法实现条件查询分页
        eduTeacherService.page(pageTeacher,wrapper);
        long total = pageTeacher.getTotal(); //总记录数
        List<EduTeacher> records = pageTeacher.getRecords(); //list集合
        return R.ok().data("total",total).data("rows",records);
    }

    //5 添加讲师接口的方法
    @PostMapping("addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher) {
        boolean save = eduTeacherService.save(eduTeacher);
        if(save) {
            return R.ok();
        } else {
            return R.error();
        }
    }

    //6 根据讲师id进行查询
    @GetMapping("getTeacher/{id}")
    public R getTeacher(@PathVariable String id) {
        EduTeacher eduTeacher = eduTeacherService.getById(id);
        return R.ok().data("teacher",eduTeacher);
    }

    //7 讲师修改
    @PostMapping("updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher) {
        boolean flag = eduTeacherService.updateById(eduTeacher);
        if (flag) {
            return R.ok();
        } else {
            return R.error();
        }
    }
}

